Incorrect JsonProperty string values

[brianfromoregon]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [x ] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

See https://stackoverflow.com/questions/60328500/widevine-encrypted-videos-in-azure-do-not-expire

Any log messages given by the failure

Expected/desired behavior

Expected video would expire when played in Shaka player

OS and Version?

Windows 10

Versions

Master branch

Mention any other details that might be useful

The strings inside all the JsonProperty annotations appear to be incorrect, they are camel case instead of lowercase with underscores. When I change those strings then things work as expected.

[AnassHmida]

Hello , this is not working for me , any fix?